You see this happen in asian countries fairly often. First time I can remember it happening in the US.

yea ive seen a bunch of stories like this coming from asia. i remember a story from a few years back when a guy busted into a maternity ward somewhere in a Scandanavian country and started stabbing all the babies and ****. like...wtf

It's sad that its going to get spun into a gun control issue when it should really be mental health issue. We need to rethink how we identify and treat the mentally ill. When you ignore, alienate, and stigmatize someone who is already unstable, this is what you can end up with.